Respect rails config.generators options

[joshuapaling]

      def create_test_files
        template "tests/test_unit/functional_test.rb.erb", File.join("test/controllers", prefix, controller_class_path, "#{controller_file_name}_controller_test.rb")
      end

It would be cool if that respected your generator config options in application.rb, and used rspec or whatever you'd included there:

    # http://guides.rubyonrails.org/generators.html#customizing-your-workflow
    config.generators do |g|
      g.test_framework  :rspec, fixture: false
    end